Bowmalloy KP80402-2 Uss Flat Washer 3/8 in Steel Zinc

Product Description

The BOWMALLOY KP80402-2 is a USS flat washer designed for use with 3/8 inch fasteners in structural and mechanical assemblies. Manufactured from steel with a clear zinc chromate finish, this washer provides corrosion resistance while distributing load across bolted connections. It meets ASTM F436 fastener standards, making it appropriate for applications where a recognized performance specification is required. The inside diameter measures 0.396 inches and the outside diameter is 1.0 inches, with a thickness of 0.078 inches. Trade professionals and maintenance technicians specify USS-pattern washers when a wider bearing surface is needed compared to standard SAE washers.

This washer is suited for general industrial, construction, and mechanical maintenance applications where 3/8 inch fasteners are in use. The USS pattern provides a broader outer diameter than SAE equivalents, offering improved load distribution on softer substrate materials or oversized clearance holes. It is commonly used in HVAC equipment mounting, structural steel connections, plumbing fixture installations, and general mechanical assemblies that require a standardized flat washer to ASTM F436.

Key Features

• USS flat washer pattern with 1.0 inch outside diameter for broad load distribution
• Steel construction with clear zinc chromate finish for corrosion resistance
• Meets ASTM F436 fastener standard
• Inside diameter of 0.396 inches fits 3/8 inch screw size
• Thickness of 0.078 inches provides consistent bearing surface

Compatibility

Designed as an OEM-style and general-use replacement flat washer for applications requiring a USS-pattern washer sized for 3/8 inch fasteners per the inch measurement system.

Installation Notes

Install using standard hand tools appropriate for the fastener being used. Ensure mating surfaces are clean and free of debris before seating the washer. Follow applicable mechanical or structural codes for fastener torque requirements specific to the assembly. Do not reuse washers that show signs of deformation or corrosion damage.